Compile problems on Linux

[braddabug]

I had to make a few tweaks to get this to build on Linux:

1. add "set(CMAKE_CXX_STANDARD 11)" to CMakeLists.txt (otherwise things like static_assert() caused compiler errors)
2. add #include <malloc.h> to the top of Memory.cpp, otherwise memalign() wasn't found
3. add a semicolon to line 134 of Memory.cpp (the line that says "return memalign(alignment, size)". It's missing a semicolon.)